The buffer will never be written to so don't bother allocating it. The
tracking event is also not required.
Signed-off-by: James Clark <james.clark@xxxxxxxxxx>
---
tools/perf/arch/arm64/util/arm-spe.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c
index 1b543855f206..4301181b8e45 100644
--- a/tools/perf/arch/arm64/util/arm-spe.c
+++ b/tools/perf/arch/arm64/util/arm-spe.c
@@ -376,7 +376,7 @@ static int arm_spe_recording_options(struct auxtrace_record *itr,
container_of(itr, struct arm_spe_recording, itr);
struct evsel *evsel, *tmp;
struct perf_cpu_map *cpus = evlist->core.user_requested_cpus;
-
+ bool discard = false;
int err;
sper->evlist = evlist;
@@ -396,10 +396,17 @@ static int arm_spe_recording_options(struct auxtrace_record *itr,
return 0;
evlist__for_each_entry_safe(evlist, tmp, evsel) {
- if (evsel__is_aux_event(evsel))
+ if (evsel__is_aux_event(evsel)) {
arm_spe_setup_evsel(evsel, cpus);
+ if (evsel->core.attr.config &
+ perf_pmu__format_bits(evsel->pmu, "discard"))
+ discard = true;
+ }
}
+ if (discard)
+ return 0;
+
err = arm_spe_setup_aux_buffer(opts);
if (err)
return err;
--
2.34.1
